Hunt for ex-officer Christopher Dorner

The rage-filled “manifesto” written by former police officer Christopher Dorner before he went on an alleged cop killing spree around the Los Angeles area was dismissed by the head of the Los Angeles Police Department today as “self-serving” and “ramblings on the Internet.”

Dorner is believed to have killed one police officer and injured two others early this morning, in addition to killing two civilians, on a spree that he threatened would have a “high action of violence” in an angry missive posted to his Facebook wall earlier this week.

Dorner wrote in his manifesto that he believed the retired captain had represented the interests of the department over his.

Hours after authorities identified Dorner as a suspect in the double murder, police believe Dorner shot and grazed an LAPD officer in Corona and then used a rifle to ambush two Riverside police officers early Thursday, killing one and seriously wounding the other.

The incident led police to believe he was armed with multiple weapons, including an assault-type rifle. That detail concerned officers whose bullet-proof vests can be penetrated by such high-powered weapons, said LAPD Deputy Chief Kirk Albanese.

As a result, all LAPD officers have been required to work in pairs to ensure

“a greater likelihood of coming out on top if there is an ambush,” Albanese said. “We have no officers alone right now.”